package Viewer;

import java.util.List;

import javax.swing.JTextField;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.PlainDocument;

/* From http://java.sun.com/docs/books/tutorial/index.html
 * 
 * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * -Redistribution of source code must retain the above copyright notice, this
 *  list of conditions and the following disclaimer.
 *
 * -Redistribution in binary form must reproduce the above copyright notice,
 *  this list of conditions and the following disclaimer in the documentation
 *  and/or other materials provided with the distribution.
 *
 * Neither the name of Sun Microsystems, Inc. or the names of contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
 * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
 * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN")
 * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
 * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
 * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
 * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 *
 * You acknowledge that this software is not designed, licensed or intended
 * for use in the design, construction, operation or maintenance of any
 * nuclear facility.
 * 
 *  <a href="http://www.java2s.com/Code/Java/Swing-Components/AutocompleteComboBox.htm">http://www.java2s.com/Code/Java/Swing-Components/AutocompleteComboBox.htm</a>
 */
@SuppressWarnings("serial")
public class AutoTextField extends JTextField {

    class AutoDocument extends PlainDocument {

	public void replace(int i, int j, String s, AttributeSet attributeset) throws BadLocationException {
	    super.remove(i, j);
	    insertString(i, s, attributeset);
	}

	public void insertString(int i, String s, AttributeSet attributeset) throws BadLocationException {
	    if (s == null || "".equals(s))
		return;
	    String s1 = getText(0, i);
	    String s2 = getMatch(s1 + s);
	    int j = (i + s.length()) - 1;
	    if (isStrict && s2 == null) {
		s2 = getMatch(s1);
		j--;
	    } else if (!isStrict && s2 == null) {
		super.insertString(i, s, attributeset);
		return;
	    }
	    if (autoComboBox != null && s2 != null)
		autoComboBox.setSelectedValue(s2);
	    super.remove(0, getLength());
	    super.insertString(0, s2, attributeset);
	    setSelectionStart(j + 1);
	    setSelectionEnd(getLength());
	}

	public void remove(int i, int j) throws BadLocationException {
	    int k = getSelectionStart();
	    if (k > 0)
		k--;
	    String s = getMatch(getText(0, k));
	    if (!isStrict && s == null) {
		super.remove(i, j);
	    } else {
		super.remove(0, getLength());
		super.insertString(0, s, null);
	    }
	    if (autoComboBox != null && s != null)
		autoComboBox.setSelectedValue(s);
	    try {
		setSelectionStart(k);
		setSelectionEnd(getLength());
	    } catch (Exception exception) {
	    }
	}

    }

    @SuppressWarnings("rawtypes")
    public AutoTextField(List list) {
	isCaseSensitive = false;
	isStrict = true;
	autoComboBox = null;
	if (list == null) {
	    throw new IllegalArgumentException("values can not be null");
	} else {
	    dataList = list;
	    init();
	    return;
	}
    }

    @SuppressWarnings("rawtypes")
    AutoTextField(List list, AutoCompleteBox b) {
	isCaseSensitive = false;
	isStrict = true;
	autoComboBox = null;
	if (list == null) {
	    throw new IllegalArgumentException("values can not be null");
	} else {
	    dataList = list;
	    autoComboBox = b;
	    init();
	    return;
	}
    }

    private void init() {
	setDocument(new AutoDocument());
	if (isStrict && dataList.size() > 0)
	    setText(dataList.get(0).toString());
    }

    private String getMatch(String s) {
	for (int i = 0; i < dataList.size(); i++) {
	    String s1 = dataList.get(i).toString();
	    if (s1 != null) {
		if (!isCaseSensitive && s1.toLowerCase().startsWith(s.toLowerCase()))
		    return s1;
		if (isCaseSensitive && s1.startsWith(s))
		    return s1;
	    }
	}

	return null;
    }

    public void replaceSelection(String s) {
	AutoDocument _lb = (AutoDocument) getDocument();
	if (_lb != null)
	    try {
		int i = Math.min(getCaret().getDot(), getCaret().getMark());
		int j = Math.max(getCaret().getDot(), getCaret().getMark());
		_lb.replace(i, j - i, s, null);
	    } catch (Exception exception) {
	    }
    }

    public boolean isCaseSensitive() {
	return isCaseSensitive;
    }

    public void setCaseSensitive(boolean flag) {
	isCaseSensitive = flag;
    }

    public boolean isStrict() {
	return isStrict;
    }

    public void setStrict(boolean flag) {
	isStrict = flag;
    }

    @SuppressWarnings("rawtypes")
    public List getDataList() {
	return dataList;
    }

    @SuppressWarnings("rawtypes")
    public void setDataList(List list) {
	if (list == null) {
	    throw new IllegalArgumentException("values can not be null");
	} else {
	    dataList = list;
	    return;
	}
    }

    @SuppressWarnings("rawtypes")
    private List dataList;

    private boolean isCaseSensitive;

    private boolean isStrict;

    private AutoCompleteBox autoComboBox;
}